Top-rated addition to existing structure builders.

Get matched with top addition to existing structure builders in Cohasset, MA

Enter your zip and get matched with up to 3 pros

Matching on HomeAdvisor

Share some details icon
Share some details about your home project.
Match with local pros icon
Within moments, match with highly-rated local pros.
Compare quotes icon
Compare quotes and choose the best pro for the job.

Find Addition to existing structure builders in Cohasset

Coen Construction

387 Page Street, Suite 10B
4.16(
43
)
Approved Pro

Coen Construction

387 Page Street, Suite 10B
4.16(
43
)
Approved Pro
Customers say: True professional
150 local quotes requested
14 years of experience

We are a licensed and insured residential construction and remodeling company. Our goal is to exceed all of our clients expectations through exceptional customer service and quality craftsmanship. We work with some of the best tradesmen in the industry to deliver a quality finished product. From kitchen and bath remodels to carpentry and painting, we can do it all. Contact us for an estimate on your project today! Check out our instagram for photos and updates @coenconstruction

"They were highly rated so i went with them. They provided a project manager that didn't oversee the job and failed inspection because of common mistakes. They blames the window on me for having incorrect size. we eventually got he correct windows they didn't finish the deck properly the cut corners and made excused that it wasn't in contract and i had to pay extra for their inconsistencies. the electrician put thermostat on floor so i couldn't see it.They Blamed everything on me. now the final bill came in and they marked up the bill for a 30 percent markup. I called another contractor to evaluate the work and boy did he find all the hidden things i knew were already wrong. Im not a contractor by the way but i have eyes. "

Dawn E on August 2025

We are a licensed and insured residential construction and remodeling company. Our goal is to exceed all of our clients expectations through exceptional customer service and quality craftsmanship. We work with some of the best tradesmen in the industry to deliver a quality finished product. From kitchen and bath remodels to carpentry and painting, we can do it all. Contact us for an estimate on your project today! Check out our instagram for photos and updates @coenconstruction

"They were highly rated so i went with them. They provided a project manager that didn't oversee the job and failed inspection because of common mistakes. They blames the window on me for having incorrect size. we eventually got he correct windows they didn't finish the deck properly the cut corners and made excused that it wasn't in contract and i had to pay extra for their inconsistencies. the electrician put thermostat on floor so i couldn't see it.They Blamed everything on me. now the final bill came in and they marked up the bill for a 30 percent markup. I called another contractor to evaluate the work and boy did he find all the hidden things i knew were already wrong. Im not a contractor by the way but i have eyes. "

Dawn E on August 2025


Avatar for Neary Construction

Neary Construction

531 Pleasant St
4.92(
154
)
Approved Pro

Neary Construction

531 Pleasant St
4.92(
154
)
Approved Pro
Super Service Award
Customers say: Super punctual
Recommended by 97% of Angi customers
Recommended by 97% of HomeAdvisor customers
28 local quotes requested

Neary Construction is fully licensed and insured and has over 30 years of experience in the carpentry and building field and has been serving the Greater Boston area for over 15 years. Liam Neary, owner of Neary Construction, began his career building and remodeling Irish pubs across the United States from Boston to San Diego. He also did custom work such as furniture making and cabinetry. Neary Construction has expanded to home building, home additions, home renovations and all types of construction services for both residential and commercial project needs. Neary Construction provides you with quality craftsmanship and strong customer support. We work closely with you throughout the building process to ensure that the project is completed to your full satisfaction....Your vision is our vision. Owner operated. Uses subs for electrical, plumbing, plaster, etc. Cost is determined by the job. No travel chargesOwner operated. Uses subs for electrical, plumbing and plaster. Cost is determined by the job. No travel charge. Please email or call rather than message center. You can also visit us on Facebook, to view all of our latest and up-to-date projects, Liam Neary Construction Facebook

"Highly recommended!! Liam did a wonderful job with my closer repair. The room was gutted to the studs from a water leak and Liam put it back together beautifully. I’m very happy with his craftsmanship and excellent work. He was courteous, professional, and very skilled. I’d highly recommend his services!"

Helen F on June 2025

Neary Construction is fully licensed and insured and has over 30 years of experience in the carpentry and building field and has been serving the Greater Boston area for over 15 years. Liam Neary, owner of Neary Construction, began his career building and remodeling Irish pubs across the United States from Boston to San Diego. He also did custom work such as furniture making and cabinetry. Neary Construction has expanded to home building, home additions, home renovations and all types of construction services for both residential and commercial project needs. Neary Construction provides you with quality craftsmanship and strong customer support. We work closely with you throughout the building process to ensure that the project is completed to your full satisfaction....Your vision is our vision. Owner operated. Uses subs for electrical, plumbing, plaster, etc. Cost is determined by the job. No travel chargesOwner operated. Uses subs for electrical, plumbing and plaster. Cost is determined by the job. No travel charge. Please email or call rather than message center. You can also visit us on Facebook, to view all of our latest and up-to-date projects, Liam Neary Construction Facebook

"Highly recommended!! Liam did a wonderful job with my closer repair. The room was gutted to the studs from a water leak and Liam put it back together beautifully. I’m very happy with his craftsmanship and excellent work. He was courteous, professional, and very skilled. I’d highly recommend his services!"

Helen F on June 2025


Avatar for WIT Contracting

WIT Contracting

337 Pine St
5.00(
3
)
Approved Pro

WIT Contracting

337 Pine St
5.00(
3
)
Approved Pro
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
56 local quotes requested

W.I.T. Contracting, is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests, and make their concerns the basis of our business. State Licenses Home Improvement Contractor #: 194838 EXP: 3/11/2026 Construction Supervisors #: CS-115488 EXP: 1/8/2027

"It went very well. Sam’s team was a great group of people to work with. Responsible, responsive, kind, and flexible."

Maline C on March 2025

W.I.T. Contracting, is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests, and make their concerns the basis of our business. State Licenses Home Improvement Contractor #: 194838 EXP: 3/11/2026 Construction Supervisors #: CS-115488 EXP: 1/8/2027

"It went very well. Sam’s team was a great group of people to work with. Responsible, responsive, kind, and flexible."

Maline C on March 2025


"Great experience working with Jared and Marllon at Right Angle Carpentry. They responded promptly to my Angi request, setting up time the same day to scope the work. The price was fair we scheduled the work the next week. The showed up on time, work was done in the timeframe indicated and for the price agreed. The guys cleaned their work area as well. Super happy with their work and hope to use them again soon."

Darlene M on March 2025

We guarantee your satisfaction. We pride ourselves on the quality work we provide, while delivering great customer service. Check out our services offered and call or click to schedule an estimate today!

"Great experience working with Jared and Marllon at Right Angle Carpentry. They responded promptly to my Angi request, setting up time the same day to scope the work. The price was fair we scheduled the work the next week. The showed up on time, work was done in the timeframe indicated and for the price agreed. The guys cleaned their work area as well. Super happy with their work and hope to use them again soon."

Darlene M on March 2025


Avatar for Liberty Construction & Landscape

Liberty Construction & Landscape

95 Hayward Road
4.42(
63
)
Approved Pro

Liberty Construction & Landscape

95 Hayward Road
4.42(
63
)
Approved Pro
Customers say: Quality work
16 local quotes requested
38 years of experience

Liberty Construction & Landscape, has been beautifying homes, baths, kitchens, yards and gardens in Plymouth County since 1987. Our artistry and workmanship is matched only by superior customer service. Whether you need home a new home remodal or new landscaping for your home or simply are looking for simple and economical ways to enhance the beauty of your property, Liberty Construction & Landscape, will be there to help. Our crews will be there to help you with your projects when you need us. If you need to add a deck or brick or stone patio call us today. We treat each customer's home like it is our own, with care and pride.

"Adam and his team are outstanding. We built in two stages, adding a basement bathroom, removed a wall and all tge finishing work that goes with it! This was done beautifully! Six months later I had a full addition ( in law apartment) full basement with high ceilings, and tge main house is stunning! It doesn’t feel like an in-law apartment, cathedral ceiling, giant bathroom, all the comforts of home Adam was quick to respond to all my concerns, he always answered his phone and if I didn’t like something he was quick to fix it. I would highly recommend Liberty construction- you won’t be disappointed!"

Ginah F on October 2025

Liberty Construction & Landscape, has been beautifying homes, baths, kitchens, yards and gardens in Plymouth County since 1987. Our artistry and workmanship is matched only by superior customer service. Whether you need home a new home remodal or new landscaping for your home or simply are looking for simple and economical ways to enhance the beauty of your property, Liberty Construction & Landscape, will be there to help. Our crews will be there to help you with your projects when you need us. If you need to add a deck or brick or stone patio call us today. We treat each customer's home like it is our own, with care and pride.

"Adam and his team are outstanding. We built in two stages, adding a basement bathroom, removed a wall and all tge finishing work that goes with it! This was done beautifully! Six months later I had a full addition ( in law apartment) full basement with high ceilings, and tge main house is stunning! It doesn’t feel like an in-law apartment, cathedral ceiling, giant bathroom, all the comforts of home Adam was quick to respond to all my concerns, he always answered his phone and if I didn’t like something he was quick to fix it. I would highly recommend Liberty construction- you won’t be disappointed!"

Ginah F on October 2025


Avatar for Maize Remodeling Group

Maize Remodeling Group

199 Central Street
5.00(
4
)
Approved Pro

Maize Remodeling Group

199 Central Street
5.00(
4
)
Approved Pro
Super Service Award
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
83 local quotes requested

Maize Remodeling Group is a specialized construction group with 20 years of knowledge and experience, all based on hundreds of projects. Our goal is to exceed our customers' dreams for their construction projects and turn them into reality. Maize Group involves experts from various sectors, including designers, architects, engineers, and project managers, who are involved in every step of the project. Additionally, please note that Maize's minimum project amount would be $3,500.00.

"Went very well. On time, very professional. Very clean, finished the job on time and surprisingly under original budget."

Thomas M on September 2025

Maize Remodeling Group is a specialized construction group with 20 years of knowledge and experience, all based on hundreds of projects. Our goal is to exceed our customers' dreams for their construction projects and turn them into reality. Maize Group involves experts from various sectors, including designers, architects, engineers, and project managers, who are involved in every step of the project. Additionally, please note that Maize's minimum project amount would be $3,500.00.

"Went very well. On time, very professional. Very clean, finished the job on time and surprisingly under original budget."

Thomas M on September 2025


Avatar for Fiske Construction Co. Inc

Fiske Construction Co. Inc

11 Marie Elaine Drive
5.00(
24
)
Approved Pro

Fiske Construction Co. Inc

11 Marie Elaine Drive
5.00(
24
)
Approved Pro
Customers say: Quality work
18 years of experience
Free onsite estimate

With over 20 years of experience, We take pride in quality craftsmanship. We are family owned, and believe in building long-term relationships with our clients by delivering honesty along with exceptional work. We pride our company on reliability, great communication, integrity, and customer service. We are experts in our trade and will do our best to keep you as educated as we can on your particular project. Give us a call today! We look forward to working with you!

"My project was to add a porch to the front of my antique house. I quoted the job out to 3 builders and found the prices all to be similar. Although Fiske Construction was very slightly higher I was impressed with the professionalism of the quote and Mike�s understanding of what I was looking for. I showed him a couple of pictures of the style I wanted and he immediately picked up the details that gave the look I wanted. Mike arranged for the permits and began work as soon as they were set. Mike�s work ethic is far better than many these days, he showed up early and worked hard all day, every day. I never felt that my job wasn�t his top priority. I added a couple of features during the construction , Mike gave me a very fair price on the additional work and arranged for the materials required. Mike is more than just a builder, he is a Craftsman. The fit, finish, and quality of the porch is top notch. I have had neighbors and strangers compliment me on what a beautiful porch and how it looks like it has always been there. It�s not an easy task to add to a house built in the early 1800�s and match the quality of workmanship and style for that period but Mike and his team nailed it, I could not be happier or ask for a single change for the entire project. If I need any building projects in the future I will definitely have Fiske Contruction do the work. These days with some pretty questionable contractors out there Mike Fiske is a shining star and a safe bet for any project you may be"

Homeowner on March 2011

With over 20 years of experience, We take pride in quality craftsmanship. We are family owned, and believe in building long-term relationships with our clients by delivering honesty along with exceptional work. We pride our company on reliability, great communication, integrity, and customer service. We are experts in our trade and will do our best to keep you as educated as we can on your particular project. Give us a call today! We look forward to working with you!

"My project was to add a porch to the front of my antique house. I quoted the job out to 3 builders and found the prices all to be similar. Although Fiske Construction was very slightly higher I was impressed with the professionalism of the quote and Mike�s understanding of what I was looking for. I showed him a couple of pictures of the style I wanted and he immediately picked up the details that gave the look I wanted. Mike arranged for the permits and began work as soon as they were set. Mike�s work ethic is far better than many these days, he showed up early and worked hard all day, every day. I never felt that my job wasn�t his top priority. I added a couple of features during the construction , Mike gave me a very fair price on the additional work and arranged for the materials required. Mike is more than just a builder, he is a Craftsman. The fit, finish, and quality of the porch is top notch. I have had neighbors and strangers compliment me on what a beautiful porch and how it looks like it has always been there. It�s not an easy task to add to a house built in the early 1800�s and match the quality of workmanship and style for that period but Mike and his team nailed it, I could not be happier or ask for a single change for the entire project. If I need any building projects in the future I will definitely have Fiske Contruction do the work. These days with some pretty questionable contractors out there Mike Fiske is a shining star and a safe bet for any project you may be"

Homeowner on March 2011


Avatar for LMH CONSTRUCTION GROUP LLC

LMH CONSTRUCTION GROUP LLC

91 Vernon Street
4.80(
10
)
Approved Pro

LMH CONSTRUCTION GROUP LLC

91 Vernon Street
4.80(
10
)
Approved Pro
Customers say: Quality work
14 years of experience
Free onsite estimate

We take great pride in our experience, expertise, quality and customer service that we provide to meet every consumer's needs. It is our mission to provide excellent customer service from start to completion of a project. To understand the needs and expectations of our customers, we take great care to work and communicate with every customer in a personal and professional manner. Our reputation is based on service, safety and quality, regardless of how large or small the job.

"The service was excellent. The price was very competitive. Stevaughn explained the entire process, and when a few unexpected rotten pieces of wood had to be replaced, the price was very fair. Equally important was that the work continued on schedule. I would highly recommend their company."

Judy C on October 2025

We take great pride in our experience, expertise, quality and customer service that we provide to meet every consumer's needs. It is our mission to provide excellent customer service from start to completion of a project. To understand the needs and expectations of our customers, we take great care to work and communicate with every customer in a personal and professional manner. Our reputation is based on service, safety and quality, regardless of how large or small the job.

"The service was excellent. The price was very competitive. Stevaughn explained the entire process, and when a few unexpected rotten pieces of wood had to be replaced, the price was very fair. Equally important was that the work continued on schedule. I would highly recommend their company."

Judy C on October 2025


Avatar for L.L. Vigers Home Improvement

L.L. Vigers Home Improvement

5 Chartwell Drive
4.50(
10
)
Approved Pro

L.L. Vigers Home Improvement

5 Chartwell Drive
4.50(
10
)
Approved Pro
Customers say: Quick response
41 years of experience
Free onsite estimate

With over 40 years of experience, we proudly serve Cape Cod and Southeastern Massachusetts, offering expert craftsmanship and reliable service for homeowners who want the job done right. We specialize in new builds, home additions, and high-quality renovations. Our team is fully licensed and insured, and we're known for being easy to work with, respectful of your home, and committed to getting every detail just right.

"Laura and her team are amazing! They did fast, high quality work at a price that no one else could beat. I will be using her services for all future projects"

Cleo M on June 2025

With over 40 years of experience, we proudly serve Cape Cod and Southeastern Massachusetts, offering expert craftsmanship and reliable service for homeowners who want the job done right. We specialize in new builds, home additions, and high-quality renovations. Our team is fully licensed and insured, and we're known for being easy to work with, respectful of your home, and committed to getting every detail just right.

"Laura and her team are amazing! They did fast, high quality work at a price that no one else could beat. I will be using her services for all future projects"

Cleo M on June 2025


Avatar for Pierre Construction

Pierre Construction

PO BOX 255
4.36(
21
)
Approved Pro

Pierre Construction

PO BOX 255
4.36(
21
)
Approved Pro
Customers say: True professional
10 local quotes requested
26 years of experience

We are a locally owned and operated company with many years of industry experience. We value honesty and integrity, and stand behind our work. We specialize in all phases of construction from structural framing, to decorative molding installation, and a variety of related projects. We pride ourselves on the quality of our work, as well as our commitment to outstanding results. We look forward to building long-term relationships with our clients, and guarantee your satisfaction!

"I am extremely pleased with the work done by Pierre Construction! I needed a basement remodel completed for my teen who was away on a trip, it was meant to be a surprise for their birthday, and we only had 10days to make it happen. Despite the tight deadline, David assured me he could get it done, & he absolutely delivered. He provided a fair price upfront that remained consistent throughout the project. When unexpected issues came up that could have increased costs, David was transparent about the options and worked with me to stay within budget. His communication was clear & consistent from start to finish. The finished room turned out amazing, better than I could have imagined! I gave David creative control over the colors and layout, and his vision perfectly captured what I’d hoped for from our very first meeting. The attention to detail was truly five-star, & the entire process was stress free. I’ll definitely be using Pierre Construction for future projects. Highly recommended!"

Shannelle G on October 2025

We are a locally owned and operated company with many years of industry experience. We value honesty and integrity, and stand behind our work. We specialize in all phases of construction from structural framing, to decorative molding installation, and a variety of related projects. We pride ourselves on the quality of our work, as well as our commitment to outstanding results. We look forward to building long-term relationships with our clients, and guarantee your satisfaction!

"I am extremely pleased with the work done by Pierre Construction! I needed a basement remodel completed for my teen who was away on a trip, it was meant to be a surprise for their birthday, and we only had 10days to make it happen. Despite the tight deadline, David assured me he could get it done, & he absolutely delivered. He provided a fair price upfront that remained consistent throughout the project. When unexpected issues came up that could have increased costs, David was transparent about the options and worked with me to stay within budget. His communication was clear & consistent from start to finish. The finished room turned out amazing, better than I could have imagined! I gave David creative control over the colors and layout, and his vision perfectly captured what I’d hoped for from our very first meeting. The attention to detail was truly five-star, & the entire process was stress free. I’ll definitely be using Pierre Construction for future projects. Highly recommended!"

Shannelle G on October 2025

...
Showing 1-10 of 978
FAQs for addition to existing structure building service projects in Cohasset, MA

Yes, hidden rooms are legal, as long as they meet all local building regulations. If you sell your house, most states require homeowners to disclose full houseplans, which would include any hidden rooms.

If your secret room is a safe room, it should contain a means of communication aside from a cell phone, such as a shortwave radio. You should also have plenty of drinking water, a portable generator, emergency food supplies, blankets, pillows, flashlights, batteries and a first aid kit.

Any time you update your home’s square footage, you increase its value, but a secret room is a niche feature that doesn't rank high on every buyer’s list of must-haves. Investing your money in remodeling more common living areas like bedrooms, bathrooms, or kitchens will have a higher ROI than adding a secret room. Many secret rooms can act as entertainment spaces (think a game room or wine cellar) or quiet spaces (a library or study), so when building your secret room you may want to consider its versatility for when you’re ready to sell.

The Cohasset, MA homeowners’ guide to addition to existing structure building services

From average costs to expert advice, get all the answers you need to get your job done.

  • A renovated kitchen with a waterfall island

    HomeAdvisor’s DIY Kitchen Remodel Cost Guide looks at the cost of buying supplies and doing the work yourself. Find the key cost factors and how to cut expenses.

  • Secret room within bookcase

    HomeAdvisor's expert guide walks you through the cost to build a secret room, whether you're creating a safe room for security or a fun space to fulfil your childhood fantasies. Use this guide to help plan your secret room project and explore room, concea

  • outdoor patio bar

    Explore the cost to build a bar in your home and learn how materials, wet vs. dry bars, and labor costs influence the total price of your project.